Easy Vegetarian Chilli

1 Tbsp olive oil 2 onions, choppped 2 green and/or 2 red peppers, chopped 3 cloves garlic, crushed 2 cups mushrooms, sliced 2 cups cooked/canned red kidney beans 2 cups cooked/canned chickpeas 1/2 cups bulgar/ couscous rinsed 28oz (796ml) can tomatoes (or 6 fresh tomatoes chopped) 1 cup bottled salsa 1/2 cups water 1 tsp salt 1 Tbsp chilli powder 1 tap dried basil 1/2 tsp each of pepper, oregano and cumin 1/4 tsp cayenne pepper 1 Tbsp unsweetened cocoa powder 1 tsp sugar 1 cup corn niblets Heat oil in large pot. Saute onions, peppers and garlic for 5 minutes on medium heat. Add mushrooms and sautee 4-5 minutes more. Add remaining ingredients except corn. Bring to boil and simmer covered for 25 minutes stirring occassionally. Stir in corn Serve over rice